der niederen Thiere wälirend der J. 1854—1855. 307 



of which two arise from a Single cell at each bifurcation. Avicula- 

 ria Single and anterior or double and lateral (oraltogethcr wanting?) 



A. parasiticurn n. sp. Südafrika. — Alysidium Lafontii (Aud.) 

 Spanische Küste. 



Gen. C atpidium n.* Cells with an avicularian on each side, 

 with two or more, usually three, distinct apertures, 

 arising one from ihe Upper pari of another in a linear series, all fa- 

 cing thc same way and forming dichoiomously divided branches of an 

 erccl phytoid polyzoary; cells at the bifurcation Single, 



C. ornalum n. sp.* Bass-Str. 



§§ Bi- ranUiserialarla. 



Fam. S alicorn n riadae. (Cells disposed around an imagi- 

 nary axls, forming cylindrical branchcs of a dichoiomously divide:!, 

 ereet polyzoary.) 



Gen. Snlicorti ar ia. Front of cell much depressed, surroun-. 

 ded by an elevated ridge, by which thc surface is divided into more 

 or less regulär rhomboidal or hexagonal spaccs ; no aperturc. Avicu- 

 laria disposed irregularly. 



S. farciminoides Johnsl. Europ. Kästen. — S. gracilis Bush. 

 Engl. — S. tenuirostris n. sp.* Südsee. — S. maltinensis n. sp, Falk- 

 lands-Inseln. 



Gen. Nellia n. Front of cell convex , with a distinct raised 

 bordcr; a largc aperlure. üvicells ? 



iV. oculata n sp.* — N. simplex u. sp.* Beide aus der Tor- 

 res-Str. u. s. w. 



Fam. Cellula ri adae. (Cells disposed in the same plane, 

 forming linear branches of a dichoiomously divided , phytoid , erect 

 polyzoary.} 



Gen. Cellularia Bush. Cells bi-triscrial, more than four in 

 each inlernode; oblong or rhomboidal, contiguous; perforaled behind. 

 Without avicularium or vibraculum , unless rarely the former on the 

 Upper and outer angle of thc cell. 



C. cuipidata fC. monotrypa n.sp.*J Busk. SOdsec. — C. Peackii 

 Bush. Engl. Küste. — C ornala n. sp. Algoa.ßay. 



Gen. Menipea Lamx. Cells oblong or elongaled and allcnua- 

 led downwards ; impcrforalc behind , wilh a scssile avicularium frc- 

 qucntly abscnt on the Upper and outer angic, and one or two scssile 

 avicularia on the front of the cell bclow the aperlure. 



M. (uegemis n. sp. Falklands-lns. u. s. w. — M. ternala (Ell. 

 and Sei.) Engl. Küsten. — M. cirrata (Esp.) Lamx. Südafr. — M. 

 iriteriata n. sp. ebendah. — M. multiseriata n. sp. Vaterl. unbck. — 

 lU. patagonica n. sp. Falklands-Ins. 



